Knowledge Hub · Buying & ownership · First car · 7 min read

First car: what you can actually afford

The 20/4/10 rule, the insurance quote almost everyone skips, and how to turn a monthly number into an out-the-door price before a salesperson does it for you.

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Free preview · from the dealership side of the desk

The first question you will be asked at a dealership is ‘what payment are you looking for?’ It sounds helpful. It is the setup. A payment can be made to fit almost any car by stretching the term, and the salesperson knows that a first-time buyer who says ‘$300’ will usually sign for $340 at 72 months without noticing what that costs. So decide the budget before anyone else does, and decide it as a total cost, not a payment.

Start with what you actually bring home each month after taxes, not your salary. A $48,000 salary is roughly $3,100 a month in hand in most states. Everything below is built on that take-home number, and every figure in this guide is an example, not a quote; your rate, your insurance and your state will move the numbers.

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In the full guide

  1. The 20/4/10 rule
  2. Insurance is the number that breaks budgets
  3. Turn the payment into a price
  4. What to leave room for
  5. If the number feels too small

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Certified pre-owned: is the premium worth it?

What a manufacturer certification actually covers, what the dealer’s ‘certified’ sticker does not, and the math on when the extra $1,000–$2,500 pays. 6 min · preview

New vs. used: the first-year depreciation math

How much a new car loses in year one, where the ‘2–3 years old’ sweet spot comes from, and a labeled example comparing new, 2-year-old and 5-year-old. 6 min · preview

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Out-the-door price explained

Every line on the worksheet, which fees move, and the email that gets a real number.

Lemon law basics: how the process generally works

What usually qualifies, the repair-attempt and days-out-of-service tests, the paperwork that decides cases, and why your state’s statute is what counts. 6 min · preview

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How to screen test drives, handle payment and make sure the title transfer releases you from liability immediately. 6 min · preview

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